Safety helmet



FIG. 1 is a view from the front of a safety helmet according to the design;

FIG. 2 is a view from the rear of the helmet of FIG. 1;

FIG. 3 is a view from one side of the helmet of FIG. 1;

FIG. 4 is a view from another side of the helmet of FIG. 1;

FIG. 5 is a view from above of the helmet of FIG. 1;

FIG. 6 is a view from below of the helmet of FIG. 1; and,

FIG. 7 is a perspective view of the helmet of FIG. 1. 

The ornamental design for a safety helmet, as shown and described. 